Metal pull-out mattresses are typically thinner, between 3.5 and 5 inches, since they have to be folded three times to fit in the sofa’s frame. These can contain springs, memory foam ...

These fixes and upgrades can make such a noticeable difference, you'll be amazed you didn't have to call a professional.

Below, shop our top picks for the best sleeper sofa mattresses. Amazon What we like: Worth noting: With more than 5,000 reviews and a 4.5-star rating, the Milliard memory foam mattress is our ...

It’s also a foam sofa that sits on the floor; a thin, squishy cushion and a thick, harder cushion make up the base, and two triangular cushions can serve as a backrest. But the base cushions fol ...